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i965: Add a comment explaining one of the brw_draw_upload.c loops.

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Reviewed-and-tested-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-09-21 07:26:33 +02:00
parent 0334e8dc25
commit 7f9e1a7720
1 changed files with 4 additions and 0 deletions
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4
src/mesa/drivers/dri/i965/brw_draw_upload.c
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@ -411,6 +411,10 @@ static void brw_prepare_vertices(struct brw_context *brw)
intel_buffer_object(glarray->BufferObj);
int k;
/* If we have a VB set to be uploaded for this buffer object
* already, reuse that VB state so that we emit fewer
* relocations.
*/
for (k = 0; k < i; k++) {
const struct gl_client_array *other = brw->vb.enabled[k]->glarray;
if (glarray->BufferObj == other->BufferObj &&